<template>
  <view>
    <uni-search-bar radius="15" placeholder="搜索" clearButton="always" cancelButton="none" @cancel="cancel" @input="input"/>
    <view class="sugg-list" v-if="searchList.length !== 0">
      <view class="sugg-item" v-for="(item, i) in searchList" :key="i" @click="gotoDetail(item.goods_id)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>
    <view class="history-box" v-else>
      <view class="history-head">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="clean"></uni-icons>
      </view>
      <view class="history-list">
        <uni-tag :text="item"  v-for="(item,index) in histories" :key="index" @click="gotoList(item)"></uni-tag>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer : null,
        kw : '',
        searchList : [],
        historyList : []
      };
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    methods : {
      input(e) {
        if(e.trim() == '') return
        clearTimeout(this.timer)
        this.timer = setTimeout(() => {
          this.kw = e
          this.getSearchList()
          this.saveHistory()
        },500)
      },
      saveHistory() {
        let set = new Set(this.historyList)
        set.delete(this.kw)
        set.add(this.kw)
        this.historyList = Array.from(set)
        uni.setStorageSync('kw',JSON.stringify(this.historyList))
      },
      async getSearchList() {
        if(this.kw.trim() == '') {
          this.searchList = []
          return
        }
        let {data} = await uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw})
        if(data.meta.status !== 200) return uni.$showMsg()
        this.searchList = data.message
      },
      gotoList(kw) {
        uni.navigateTo({
          url : '/subpkg/goods_list/goods_list?query = '+kw+''
        })
      },
      gotoDetail(id) {
        uni.navigateTo({
          url : '/subpkg/goods_detail/goods_detail?goods_id = '+id+''
        })
      },
      clean() {
        this.historyList = []
        uni.removeStorageSync('kw')
      }
    },
    computed : {
      histories () {
        return [...this.historyList].reverse()
      }
    }
  }
</script>

<style lang="scss">
.sugg-list {
  padding: 0 5px;

  .sugg-item {
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-between;

    .goods-name {
      // 文字不允许换行（单行文本）
      white-space: nowrap;
      // 溢出部分隐藏
      overflow: hidden;
      // 文本溢出后，使用 ... 代替
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}

.history-box {
  padding: 0 5px;

  .history-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }

  .history-list {
    display: flex;
    flex-wrap: wrap;

    .uni-tag {
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
